/**
* @brief MQTT协议测试主循环
* @retval None
**/
void MQTT_Loop(void)
{
static int timeout_count = 0;
int publish_state = 0;
int exit = 0;
int j = 0;
/*初始化MQTT上下文，在该api内部配置了设备ID等信息*/
if(MqttSample_Init(smpctx) < 0)
{
return;
}
printf("\r\ndevice id:%s\r\n", MQTT_DEVICE_ID);
printf("we publish topic:%s %s %s\r\n",DS_TO_PUBLISH,DS_TO_PUBLISH_T,DS_TO_PUBLISH_RH);
printf("connect to mqtt server\r\n");
/*发送MQTT连接请求报文*/
MqttSample_CmdConnect(smpctx);
printf("\r\n");
mDelay(2000);
Mqtt_RecvPkt(smpctx->mqttctx);
mDelay(2000);
/*发送MQTT订阅topic报文*/
MqttSample_CmdSubscribe(smpctx);//开机订阅
printf("\r\n");
mDelay(2000);
Mqtt_RecvPkt(smpctx->mqttctx);
printf("begin loop\n");
/*进入主循环*/
while(!exit)
{
j++;
if(j == 3)
{
//MqttSample_CmdPublish(smpctx,TIME_OUT);
/*周期性发布温湿度和一个状态数据，状态每次取反*/
publish_state = MqttSample_CmdPublishNormal(smpctx, TIME_OUT);
if(publish_state < 0)
{
timeout_count++;
if(timeout_count == 5)
{
timeout_count = 0;
/*you can do some thing*/
}
}
j = 0;
}
if(Mqtt_RecvPkt(smpctx->mqttctx)<0)
{
smpctx->publish_state=0;
}
printf("\r\n");
mDelay(100);
}
/*reclaim the resource防止内存泄露*/
MqttBuffer_Destroy(smpctx->mqttbuf);
Mqtt_DestroyContext(smpctx->mqttctx);
printf("bye...\n");
return;
}
int main(int argc, char **argv)
{
struct MqttSampleContext smpctx[1];
int evt_cnt;
const int evt_max_cnt = 2;
struct epoll_event events[evt_max_cnt];
int exit;
if(MqttSample_Init(smpctx) < 0) {
return -1;
}
(void)MqttSample_CmdHelp(smpctx);
exit = 0;
while(!exit && (evt_cnt = epoll_wait(smpctx->epfd, events, evt_max_cnt, -1)) >= 0) {
int i;
for(i = 0; i < evt_cnt; ++i) {
if(STDIN_FILENO == events[i].data.fd) {
if(MqttSample_HandleStdin(smpctx, events[i].events) < 0) {
exit = 1;
break;
}
events[i].events = EPOLLIN | EPOLLET | EPOLLONESHOT;
epoll_ctl(smpctx->epfd, EPOLL_CTL_MOD, events[i].data.fd, events + i);
}
else {
if(MqttSample_HandleSocket(smpctx, events[i].events) < 0) {
exit = 1;
break;
}
}
}
}
// reclaim the resource
MqttBuffer_Destroy(smpctx->mqttbuf);
Mqtt_DestroyContext(smpctx->mqttctx);
if(smpctx->epfd >= 0) {
close(smpctx->epfd);
smpctx->epfd = -1;
}
if(smpctx->mqttfd >= 0) {
close(smpctx->mqttfd);
smpctx->mqttfd = -1;
}
printf("bye...\n");
return 0;
}